medium6.5
CVE-2026-112395
Pillow tiled-TIFF decoder reads past tile buffer in copy4 (Unpack.c:1290)
Impact
Pillow is a Python imaging library. From 8.2.0 until 13.0.0, Pillow's tiled-TIFF decoder can read past the tile buffer while copying four-byte pixels. In _decodeTile, libtiff can return a tile allocation smaller than the required row stride multiplied by the tile length, and Pillow's stride-and-copy loop walks beyond that allocation. An attacker can supply a crafted tiled TIFF to an application that loads it. This can expose adjacent heap data in pixels or crash the process. This issue is fixed in version 13.0.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | pillow | >= 8.2.0, < 13.0.0 | 13.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Python | Pillow | from 8.2.0 before 13.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-462x-pgg6-55fp
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-462x-pgg6-55fp
- https://nvd.nist.gov/vuln/detail/CVE-2026-112395
- https://github.com/python-pillow/Pillow/commit/76869efdbbf2ad7dccd7536520fb61b7a00ab61e
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0